한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2006년도 추계학술대회 논문집
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- Pages.305-309
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- 2006
철도차량에서 사용하는 부유상구조의 진동절연특성에 관한 연구
Study on the Vibration Reduction Characteristics of Floating Floors Used in Railway Vehicles
- 발행 : 2006.11.09
초록
In this paper vibration reduction characteristics of floating floors used in railway vehicles are studied. Vibration reduction characteristics are compared through a series of tests for elastically-coupled floor and rigidly-coupled floor. It was found that elastically-coupled floor has larger vibration reduction amount than rigidly-coupled floor. Around the fundamental natural frequency, however, elastic floor has poor vibration reduction effect than rigid floor. Measures to reduce structure-borne noise are also discussed based on the test results. Structure-borne noise for running railway vehicles cannot be reduced by an effort to deviate resonance between natural frequency of floors and major exciting forces. Instead, reducing vibration level of top floor and using covers which have low sound radiation coefficient will be effective for reducing structure-borne noise.
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